int i=1;
float f=1.0f;
String s="This is a string.";
boolean ok;

i=5;
i=i+5;
i++; // i=i+1;

f=1;
f=1.3f;
f=f + 2.6f;

s="This is another string.";
s=s+" Now it's longer.";

ok=true;
ok=false;

i=1;
if(i>4) println("i bigger than 4.");
else if(i>2) println("i bigger than 2.");
else println("i not bigger than 4 or 2.");

if(ok) println("all is ok.");
else println("all is not ok.");

boolean drawRedSquare=true;
if(drawRedSquare) {
  fill(200,0,0);
  rect(20,20,50,50);
}